Explore topic-wise InterviewSolutions in Current Affairs.

Statement I F -atom has a less negative electron affinity than Cl-atom.
Statement II Additional electrons are repelled more effectively by 3p-electrons in Cl-atom than by 2p-electrons in F-atom.

What is the major dehydration product in the following reaction?

Assuming $z$-orbital to be the inter-nuclear axis, which of the following overlaps is incorrect?

If the radius of $M{g}^{2+}$ is $6.5pm$ and $O_2^{-}$ is $14pm$, then calculate the coordination number of $M{g}^{2+}$ in the crystal of $MgO$.

Vapour pressure of a solvent is 17.5 mm Hg while that of its dilute solution is 17.45mm Hg. The mole fraction of the solvent is

How many grams of hydrogen gas is required to produce 4.8 mol of ammonia on a reaction with an excess of nitrogen?

Find the dimension of 'The gas constant R' .

Why the size of aluminium is greater than the size of gallium?

A plot of volume (V) versus temperature (T) for a gas at constant pressure is a straight line passing through the origin. The plots at different values of pressure are shown in figure. Which of the following order of pressure is correct for this gas?

(a) $p_1>p_2>p_3>p_4$ (b)$p_1=p_2=p_3=p_4$

(c) $p_1<p_2<p_3<p_4$ (d) $p_1<p_2=p_3<p_4$

For a diatomic gas, the number of translational degrees of freedom is

Match the following

$\begin{array}{ccc}\text{(1)}TeC{l}_4& \text{(i) Trigonal Planar}& \text{(I) See-Saw}\\ \text{(2)}IC{l}_5& \text{(ii) Octahedral}& \text{(II) Pyramidal}\\ \text{(3)}P{H}_3& \text{(iii) Trigonal bipyramidal}& \text{(III) Square pyramidal}\\ \text{(4)}N{O}_2^{-}& \text{(iv) Tetrahedral}& \text{(IV) Bent}\end{array}$

If excess water is added into a bottle labelled as $109\%H_{2}S{O}_4$ and is reacted with $6.6gN{a}_{2}C{O}_3$ then find the volume of $C{O}_2$ evolved at $1atm$ and $273K$ after the completion of the reaction.

The alkali metals are low melting . Which of the following alkali metal is expected to melt if the room temperature rises to ${30}^{\circ }$C?
(a) Na (b) K (c) Rb (d) Cs

Now let's calculate the mass of a 3-D unit cell. Assume that each sphere has a mass m and the sphere lies at the center of the faces of the cube. What will be the mass in the following case?

The decreasing order of the stabilities of the following alkenes is:

Write 3 difference between weak and strong base

Why CN- is a strong ligand than NC-??Aren't c donor stronger ligands.

Which of the following is the correct order of electron density on the benzene ring in the following compounds?

The van't Hoff factor of 0.1m CH₃COOH solution is 1.041 The degree of dissosciation is

d-block elements form alloys because of:

Mg²⁺ , Ar, Br , Ca²⁺

arrange in decreasing order of radii

How much will be the reduction potential of a hydrogen Electrode change when its solution initially at pH = 0 Is neutralized to pH = 7?

The set representing the correct order of first ionization potential is?

The correct statements among the following are

A) The minimum number of carbon atoms present in a monosaccharide is 6

B) Among glucose, Lactose, Maltose and Sucrose,non reducing sugar is sucrose

C) In amylopectin of starch, branched chain are due to 1,4 - linkages

D) In cellulose, β - D - glucose units are joined by 1,4 - glycosidic linkages

H_2,^,CO_{2, Ar are gases}

_{then why they are classified as non polar solids?}

Element X is strongly electropositive and Y is strongly electronegative. Both are univalent. The compound formed would be:

A radioactive sample $S_1$ having an activity of $5\mu Ci$ has twice the number of nuclei as another sample $S_2$ which has an activity of $10\mu Ci$. The half lives of $S_1$ and $S_2$ can be

Match the items in the second list with corresponding items from the first list

$\begin{array}{cccc}& ListI& & ListII\\ \left(A\right)& Perfectgasequationis& e& \frac{R}{N}\\ \left(B\right)& Boltman{n}^{\prime }sconstant,K_B& f& \frac{Molecularmass}{Massof1molecule}\\ \left(C\right)& Avogadr{o}^{\prime }snumber& g& PV=nRT\\ \left(D\right)& No.ofmoles,n=& h& \frac{Massofgas}{Molecularmass}\end{array}$

Chemical formula for calcium pyrophosphate is The formula for ferric pyrophosphate will be

Find the frequency range of visible light, given that it encompasses wavelengths from 380 nm to 760 nm.

Which reagent among the following can affect the conversion ?

CH₃CN CH₃CH₂NH₂

Heat of neutralization of weak acid and strong base is less than the heat of

neutralisation of strong acid and strong base due to

The number of atoms per unit cell in a primitive unit cell is:

The value of universal gas constant R depends on:

Why BF₃ is a stable compound even if boron is not satisfying the octet rule?

When hydrochloric acid is added to cobalt nitrate solution at room temperature, the following reaction takes place and the reaction mixture becomes blue. On cooling the mixture it becomes pink. On the basis of this information mark the correct answer.

$\underset{pink}{\underset{}{\left[Co\right(H_{2}O{)}_6{]}^{3^{+}}\left(aq\right)}}+4C{l}^{-}\left(aq\right)\leftrightharpoons \underset{blue}{\underset{}{\left[C_{o}C{l}_4{]}^{2^{-}}\right(aq)}}+6H_{2}O\left(l\right)$

How do you convert the following

a) benzoyl chloride to benzaldehyde b) methyl benzene to benzoic acid